Electric drum



FIG. 1 is a front perspective view of an electric drum showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. S is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings depict portions of the electric drum that form no part of the claimed design. 

CLAIM The ornamental design for an electric drum, as shown and described. 